Extended: similar to Enhanced, but with a 16:9 aspect ratio,
suitable for HDTV and cinema

We currently offer these charts in inkjet format, with Enhanced
versionsavailable as photographic prints. All SineImage ISO
12233:2014 E-SFR charts are fully compliant with the ISO standard.
The Imatest eSFR ISO moduleprovides highly automated support for
the new charts.

Details

Chart Size

Standard

Enhanced

Extended

1x

200 mm × 305 mm7.875" × 12"

200 mm × 305 mm7.875" × 12"

200 mm × 365 mm7.875" × 14.5"

2x

400 mm × 610 mm15.75" × 24"

400 mm × 610 mm15.75" × 24"

400 mm × 730 mm15.75" × 29"

4x

800 mm × 1220 mm31.5" × 48"

800 mm × 1220 mm31.5" × 48"

800 mm × 1460 mm31.5" × 58"

Standard Version

This chart, which has a 3:2 aspect ratio, is a "no-frills"
implementation of the standard. For most work we recommend the
Enhanced or Extended charts, which have additional edges for
measuring performance near the image boundaries, as well as
hyperbolic wedges and color patches (where the technology allows).
These chartsmaintain full compliance with the standard.

The Imatest Standard ISO 12233:2014 E-SFR chart closely resembles
the Low contrast E-SFR test chart illustrated in section 6.1 and
Annex C of the ISO standard document, with a few differences, all
of which are fully compliant with the ISO standard.

A 20 patch OECF grayscale pattern* is used instead of the 16 patch
version.

The Focus Patterns in the centers of the squares are rectangular
(to increase the MTF measurement area) and are designed to reduce
interference with automatic edge detection.

There are four registration marks instead of three to facilitate
automated region detection. (Four features are required for a
projective transform.)

An additional mark above the lower-left registration mark is used
for detecting chart orientation.

Enhanced Version

The Imatest Enhanced ISO 12233:2014 E-SFR chart has all the
features of the Standard chart, keeping the 3:2 aspect ratio, with
the addition of six added slanted squaresfor measuring performance
near the image boundaries and hyperbolic wedges for visual analysis
or analysis with the Imatest Wedge module. It also has 16 color
patches when produced with technologies that allow color. Since
these additions are in regions of the chart not covered by the
standard, compliance with the standard is unaffected.

The differences between the Imatest charts and the chart
illustrated in the standard are listed below. Even with these
differences the Imatest chart is in full compliance with the
standard.

A 20 patch OECF grayscale pattern* is used as opposed to the 16
patch version.

The Focus Patterns in the centers of the squares are rectangular
(to increase the MTF measurement area) and are designed to reduce
interference with automatic edge detection.

There are four registration marks instead of three to facilitate
automated region detection. (Four features are required for a
projective transform.)

An additional mark above the lower-left registration mark is used
for detecting chart orientation.

The differences between the Enhanced and Standard Versions are as
follows:

Six extra slanted squares are added for measuring performance near
the image boundaries.

Several hyperbolic wedges with spatial frequencies, similar to the
CIPA chart referenced in the ISO standard, for visual analysis or
use with the Imatest Wedge module.

16 color patches when produced with technologies that allow color
(inkjet or color LVT), with colors similar to the industry-standard
24-color test chart.

This chart will work with the fully-automated eSFR ISO module.

Extended Version

The Imatest Extended ISO 12233:2014 E-SFR chart has all the
features of the Enhanced chart (six extra squares, wedges, and 16
color patches where possible), but has a16:9 aspect ratio, which
makes it suitable for HDTV and cinema measurements (and it also
works well with 3:2 aspect ratio DSLRs). It is fully compliant with
the standard.

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